E T Esteban

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Peptides known to block the extracellular interactions of adhesion receptors belonging to a subclass of the integrin family were tested for their effects on the stabilization of long-term potentiation (LTP) in hippocampal slices. Theta burst stimulation delivered after infusions of Gly-Ala-Val-Ser-Thr-Ala (GAVSTA) resulted in a potentiation effect that(More)
Using sera from hosts infected with bovine leukaemia virus (BLV), human T cell lymphoma virus types I and II (HTLV-I and -II), or simian T cell lymphoma virus type I (STLV-I), we found that the major gag proteins of these viruses cross-react immunologically. The specificity of this cross-reactivity was demonstrated by absorption using purified viral(More)
A 27-kDa protein from adult rat brain synaptosomes was purified by matrix-affinity chromatography. The matrix receptor interacted with the Arg-Gly-Asp-Ser sequence recognized by integrin-type adhesion molecules, and was labeled by integrin antibodies. Levels of the 27-kDa species in brain membranes were unaffected by proteolysis, however, conventional(More)
Bovine leukaemia virus (BLV) resides in infected lymphocytes in a latent, repressed state but becomes expressed a few hours after the cells are cultured in vitro. We have identified several conditions and factors affecting the expression of BLV in short-term cultures of naturally infected lymphoid cells. The presence of foetal calf serum in the culture(More)
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